chore(docs): Add info about withPrefix to path-prefix (#17583)
chore(docs): Add info about withPrefix to path-prefix (#17583)

* Update path-prefix.md

* add code backticks


Co-authored-by: Lennart <074ba1c0efc36927866875b17be4fa06eb80e472@gmail.com>
gatsbyjs/gatsby,gatsbyjs/gatsby,gatsbyjs/gatsby,gatsbyjs/gatsby,gatsbyjs/gatsby,gatsbyjs/gatsby